The recent observation [1]} of coherent
neutrino-nucleus elastic scattering [2]}, or CEvNS
for short, provides a novel window to probe standard and beyond
standard physics in the neutrino sector. A key feature of CEvNS is
that it only takes place when the momentum transferred to the nucleus
is relatively small, near or below the MeV scale, so that the neutrino
can coherently scatter off the whole nucleus instead of distinguishing
its individual nucleons. The coherence of the interaction results in
sensitivity to the square of the total weak charge of the nucleus,
which could enhance the coherent scattering cross section by a factor
10-100 when compared to neutrino-nucleon scattering. In addition, new
non-standard interactions of neutrinos with matter can be enhanced at
low recoil energies if the new interaction is mediated by a light
particle [3]}. The light mediator can be a new beyond
standard model (BSM) particle, such as a \(B-L\)  gauge boson or a light
scalar, but it can also be the photon, if the neutrino possesses a
magnetic dipole moment. Both possibilities would signal the presence
of new BSM physics.
